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本文介绍了一种低浓度启动的沼气干发酵方法,指出控制启动浓度可防止或减轻沼气干发酵的酸抑制。当发酵浓度为22％和24％时,采用8—10％的启动浓度,产气量分别比对照提高11.9—14.3％和31.6—33％;启动期由15天之久缩短到3—7天.并指出低浓度低碳氮比原料启动效果更好。
This paper presents a low-concentration biogas dry fermentation method that states that starting at a controlled concentration prevents or mitigates the acid suppression of biogas fermentation. When the fermentation concentrations were 22% and 24%, the initial concentration of 8-10% was used to increase the gas production by 11.9-14.3% and 31.6-33% respectively compared with the control; the start-up period was shortened from 15 days to 3-7 days. And pointed out that the low concentration of low-carbon nitrogen than the starting material better.